LIME TEST REPORT FAIL (WHATS WRONG)

The place to discuss the use of the LimeSDR Mini for amateur TV applications
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M1dhv
Posts: 2
Joined: Mon Jun 22, 2020 7:14 am

LIME TEST REPORT FAIL (WHATS WRONG)

Post by M1dhv » Mon Jun 22, 2020 5:20 pm

Hi
I have a problem with portsdown software and limesdr mini
TEST REPORT
Hardware v1.2 Firmware v6, Gate ware v1.30

First 5 say passed
TX2 LNA W TEST FAIL
TX1 PASSED
RF LOOPBACK TEST FAILED
BOARD TEST FAILED

Further investigation require
Note that custom FPGA ALWAYS FAILS

What have I got wrong it was working

G8GKQ
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Posts: 1692
Joined: Sun Mar 22, 2009 1:21 pm

Re: LIME TEST REPORT FAIL (WHATS WRONG)

Post by G8GKQ » Mon Jun 22, 2020 6:59 pm

Hi

The test is very sensitive, and will not pass if the LimeSDR Mini has warmed up (!) or has anything connected to the SMA ports. My LimeSDRs (I have 3) sometimes pass and sometimes fail.

I tend to ignore the test - if it transmits OK, it's working. Just try it!

Dave, G8GKQ

M1dhv
Posts: 2
Joined: Mon Jun 22, 2020 7:14 am

Re: LIME TEST REPORT FAIL (WHATS WRONG)

Post by M1dhv » Mon Jun 22, 2020 8:58 pm

I HAVE NO OUTPUT green light flashes on lime
feeding small amp t power meter

G8GKQ
Site Admin
Posts: 1692
Joined: Sun Mar 22, 2009 1:21 pm

Re: LIME TEST REPORT FAIL (WHATS WRONG)

Post by G8GKQ » Tue Jun 23, 2020 7:25 pm

Hi Graham

Suggest that you go back to a known baseline.

1. Reload the basic Lime Firmware: Menu3, Lime Config, Update to FW 1.30.

2. On Menu 1, select Ouput to, Lime Mini. Make sure that you have S2QPSK modulation, Encoder H264, Format 4:3, Source PiSCreen, Freq as required, Sym Rate 333, FEC 9/10, Lime Gain 88 (or more).

3. Then select transmit. What power can you measure (or not measure)? Remember that it takes about 15 seconds to transmit.

Let us know how it goes.

Dave, G8GKQ

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